Combined sewer pit and trap.



` fwhlv'za. A n PATBNTBD JULY 7, 1903.-

J. M.- PETERS. COMBINED SEWER PIT AND TRAP.

APPLIOATIOE FILED APR. 2, 1903.

N0 IUDBL.

1m: Nonms Evans co. imofcrumo wnsnmamn. n. c.

ne. teams.'

UNITED STATES iatented july '7, 190s.

lJOSEPH MONROE PETERS, OF HARRISBURG, PENNSYLVANIA.

COMBINED SEWER PIT ANDNTRAP.

SPECIFICATION forming part of Letters Patent N o. 732,778, dated July 7, 1903.

' Application tiled April 31 1903. i Serial No. 150,792. (No model.)

ication. Y

This invention relates to improvements in that class of sewer pits and traps which are preferably east in one piece; and it is my object to provide a sewer pit and trap of this class which may be set below the frost-line, and thus prevent diplacements and cracking and at the same time so constructed asV to permit the pit to be cleaned out without breaking the Water seal in the trap leading to the sewer proper.

4W'ith this object in view myinvention consists in the peculiar construction and arrangement of parts hereinafter more particularly described, and then definitely pointed out by the claims at the end hereof. 1 In the drawings which accompany and form part of this application, Figure 1 is a vertical central section of a sewer pit and trap made in accordancewith my invention. Fig. 2 is a similar section taken at right angles to that shown in Fig. 1. Fig. 3 is a front view looking from the left-hand side of Fig. 1.

Referring now to the details of the drawings by numerals, 1 represents my cast-iron pit, the bottom of which is formed semi'circular in cross-section, as shown at 2 in Fig. 2, and on the upper end of the rear wall 3 is provided a wide flange 4. The opposite wall 5 has a preferably rectangular opening 6,

which is formed therein, as seen best in Fig.

2, and thislwall is also formed with a horizontal flange 7 similar to the flange 4. The cast metal forming the semicircular or U-shaped pit is also provided withv two horizontal flanges 8 and 9, which connect the aforesaid 'flanges 4 and 7, and these flanges therefore extend entirely around the upper part of the pit, and I deem them important for the reason that they serve two important purposes-to wit, that of forming a support for the concrete or other walls hereinafter referred to, which by the action of frost might otherwise slip down alongside of the casting, and, second, of forming a support for the casting itself, which tends to assist the casting in overcoming any tendency to settle.

A trap 11 is cast integral with the side Wall 5, hereinbefore 'referred to, and from this trap 11 and from the flange 7, heretofore described, a preferably circular outlet 1 3 projects, preferably in line with the opening 6,

leading from the pit. Of course the'trap is provided with the usual divided Wall 14, which, as shown in my drawings, is cast integrall y with the other parts.

I prefer to use my sewer-pit, as shown best I in. Figs. 2 and 3 of the drawings, where the concrete or other sides l5 15 are built up and which sides rest on the flanges 4, 7, 8, and 9, hereinbefore described, these concrete walls forming a support for the cast-iron Yframe 17 and the usual grate 18 at the street-surface. By using the pit as thus illustrated and'described I get the casting suiiiciently below the frost-line to prevent displacements and crack' ing and can also adapt it to any grade of street, as it is obvious that the wall of the sewer-pit may be placed in a perfectly horizontal position, and the concrete can be ,formed or built up in such a way as to suit the level of the street.

I am of course aware that it has heretofore been proposed to cast sewer-pits from one piece,and therefore do not claim such broadly; but I desire to point out the advantages of not only casting the sewer-pit with the flanges for thepurposes hereinbefore stated, but also of Aprovidingthe pit with a trap at one side thereof, and so forming the pit with a circular bottom that it may be cleaned without in n any Way breaking the Water seal.

While I have thus acknowledged the state of the art, I do not of course limit myself to the precise construction shown, but refer to the following claims to set v'forth Vmy invention over the prior art.

What I claim as new is z 1. A combined sewer pit andv trap cast integral ly and having a pit at the bottom thereof and integral flanges projecting horizontally therefrom, said flanges serving the double purpose of assisting in preventing the pit and trap from sinking and of forming a support for the walls and concrete or similar walls resting on the aforesaid flanges, substantially as described.

IOC

2. A combined sewer pi and trap comprising an integral cast-ing having a. semicircular o1' U-shaped pit, an integral trap leading from one side thereof, integral flanges projecting from the upper ends of the Walls of the pit, and concrete or similar Walls supported on said flanges, substantially as described.

Signed by me at Harrisburg, Pennsylvania, this 28th day of March, 1903.

JOSEPH DIONROE PETERS.

Witnesses:

HARRY M. RILEY, RICHARD M. II. WHARTON. 

